<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<style>
			.drawContainer{
				position: relative;
			}
			#hideCanvas{
				position: absolute;
				z-index:1;
				/* //visibility: hidden; */
				left:0;
				top:0;
				width:100vw;
				height:100vh;
			}
			#canvas{
				position: relative;
				z-index:2;
				width: 100vw;
				height:100vh;
			}
		</style>
	</head>
	<body>
		<div class="drawContainer">
			<canvas id="canvas" width="543" height="729"></canvas>
			<canvas id="hideCanvas" width="543" height="729"></canvas>
		</div>
		<script src="./index.js"></script>
	</body>
	
</html>
